Short range, ultra-wideband radar with high resolution swept range gate

Patent · Tue May 26 04:00:00 EDT 1998

OSTI ID:871580

McEwan, Thomas E ^[1]

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1. Livermore, CA

A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5757320
• Application Number: 08/769033
• OSTI ID: 871580
• Country of Publication: United States
• Language: English

Related Subjects

/342/
01
20
aberrations
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amplitude
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analog
analog range
antenna
assistance
automotive
background
background subtraction
band
band radar
based
circuitry
collect
control
count
cruise
data
device
device generates
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differential
differential sampling
effectively
effectively eliminate
eliminate
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equivalent
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feet
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fluid
fluid level
gate
generates
hidden
highway
improving
improving performance
inches
induced
jitter
lane
level
level sensing
limited
location
locator
near
near proximity
parking
performance
positioned
proximity
radar
radar range
range
range finder
range gate
range resolution
rebar
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replacement
resolution
resolution swept
ringing
sampling
sampling receiver
scan
sensing
simplifying
speed
speed data
stud
subtraction
swept
swept range
technology
time
time amplitude
traffic
transmit
transmit antenna
typical
typical range
ultra-wide
ultra-wide band
ultra-wideband
ultra-wideband radar
ultrasound
vehicle
wide band
wideband radar